Therefore, it has the double effect of health care, warm. By the Chinese Academy of Sciences, Shanghai Institute of technical physics test, far-infrared fiber far-infrared radiation rate is more than 87%. Far infrared fiber is used for production of daily necessities, such as far infrared knee, wrist, shawls, underwear, socks, scarves, hats, blankets, gloves, bedding and other health care, insulation products.